Before this goes too far afield.... tbontob, your definition of 'weapon' is completely valid--'anything used to cause harm to another.' But the point you're missing is that your chart deals with weapons
as defined by the game. That, I think, was Fyron's original point, and that talking about things the game does not consider to be weapons in this context is moot.
So, at least in the context of the chart, a weapon is 'a component that can do damage to another empire's ships, units, or colonies.'
A mine is not a weapon (it is a unit), but its warheads are weapons.
Intel projects are not weapons. They're, well, intel projects....
The Stellar Nucleonic Torpedo is not a weapon, though its effect is much more devastating than any weapon in the game....
Outside the context of the chart, all of the above are indeed weapons.
Can I have my hint now?
Quikngruvn